Question

Which of the following functions is not a linear function?
f(x) = -2
f(x) = x - 2
f(x) = 2x
f(x) = x 2

Answer 1

Is that last one meant to be \(f(x) = x^2\) ?

Answer 2

if it is then it's the last one!

Answer 3

Whoa let's not get ahead of ourselves, we'll get to what the answer is ;)

Answer 4

(Hint: it's not the last one.)

Answer 5

haha

Answer 6

f(x) = x - 2

Answer 7

^ Also not.

Answer 8

f(x)=2x

Answer 9

Heh. I actually take my statement back from before, it is \(f(x) = x^2\). Had thought the question was asking something subtly different O:-)

Answer 10

but how can it be a linear function if it does not cut through the origin?